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Code Issues Releases Packages Activity

Merge branch 'pci/virtualization'

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- Mark ASM1164 SATA controller to avoid bus reset since it fails to train
  the Link after reset (Alex Williamson)

- Mark Nvidia GB10 Root Ports to avoid bus reset since they may fail to
  retrain the link after reset (Johnny-CC Chang)

- Add lockdep and other lock assertions (Ilpo Järvinen)

- Add ACS quirk for Qualcomm Hamoa & Glymur, which provides ACS-like
  features but doesn't advertise an ACS Capability (Krishna Chaitanya
  Chundru)

- Add ACS quirk for Pericom PI7C9X2G404 switches, which fail under load
  when P2P Redirect Request is enabled (Nicolas Cavallari)

- Remove an incorrect unlock in pci_slot_trylock() error handling (Jinhui
  Guo)

- Lock the bridge device for slot reset (Keith Busch)

- Enable ACS after IOMMU configuration on OF platforms so ACS is enabled an
  all devices; previously the first device enumeration (typically a Root
  Port) was omitted (Manivannan Sadhasivam)

- Disable ACS Source Validation for IDT 0x80b5 and 0x8090 switches to work
  around hardware erratum; previously ACS SV was temporarily disabled,
  which worked for enumeration but not after reset (Manivannan Sadhasivam)

* pci/virtualization:
  PCI: Disable ACS SV for IDT 0x8090 switch
  PCI: Disable ACS SV for IDT 0x80b5 switch
  PCI: Cache ACS Capabilities register
  PCI: Enable ACS after configuring IOMMU for OF platforms
  PCI: Add ACS quirk for Pericom PI7C9X2G404 switches [12d8:b404]
  PCI: Add ACS quirk for Qualcomm Hamoa & Glymur
  PCI: Use device_lock_assert() to verify device lock is held
  PCI: Use lockdep_assert_held(pci_bus_sem) to verify lock is held
  PCI: Fix pci_slot_lock () device locking
  PCI: Fix pci_slot_trylock() error handling
  PCI: Mark Nvidia GB10 to avoid bus reset
  PCI: Mark ASM1164 SATA controller to avoid bus reset
This commit is contained in:
Bjorn Helgaas 2026-02-06 17:09:26 -06:00
commit 2095b9dd2e
6 changed files with 95 additions and 77 deletions
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